You can add `.php` files to this directory to load classes and functions defined in them at runtime. Any such files are loaded automatically and unconditionally, without the need to `arc liberate` first to update a library map. You can also extend Phorge by creating a separate library, storing it somewhere else, and adding it to the `load-libraries` key in configuration. See more documentation on how extensions work at https://we.phorge.it/w/docs/extensions/install/